CN109600832A - The transmission method and device of paging message - Google Patents
The transmission method and device of paging message Download PDFInfo
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- CN109600832A CN109600832A CN201710940735.6A CN201710940735A CN109600832A CN 109600832 A CN109600832 A CN 109600832A CN 201710940735 A CN201710940735 A CN 201710940735A CN 109600832 A CN109600832 A CN 109600832A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
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Abstract
This application involves wireless communication technology field more particularly to a kind of transmission methods of paging message, this method comprises: the frequency domain resource of network equipments configuration transmission paging message；The network equipment sends paging indication information to terminal device, and the paging indication information is used to indicate the frequency domain resource of the transmission paging message.The application goes back while proposing a kind of network equipment using above-mentioned network paging message transmission method, and the corresponding paging message transmission method and terminal device for being applied to terminal device.
Description
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a method for transmitting a paging message, a network device, and a terminal device.
Background
In the next generation communication standard (5G), new bandwidth methods are proposed, so that SSBs may be transmitted on a partial Bandwidth (BWP). Taking a large bandwidth scenario as an example, to support users with different bandwidth capabilities, the gNB may transmit multiple Synchronization Signal Blocks (SSBs) on one large bandwidth carrier. The same Paging message is sent over a plurality of BWPs, which may cause the downlink transmission resources occupied by the Paging message to be too large, occupy the available resources for sending other data, and reduce the transmission efficiency of the system. Considering that 5G can support high frequency transmission, the eNB needs to repeatedly transmit Paging messages in each beam direction, further increasing transmission resources occupied by Paging messages.
Disclosure of Invention
The embodiment of the invention provides a transmission method and a device of a paging message, which can improve the communication efficiency by reducing the resource occupancy rate of the paging message during downlink transmission.
In a first aspect, the present application provides a method for transmitting a paging message, including: the network equipment configures frequency domain resources for transmitting paging messages; and the network equipment sends paging indication information to the terminal equipment, wherein the paging indication information is used for indicating the frequency domain resource for transmitting the paging message.
In one possible design, the network device sends at least one remaining system information RMSI to the terminal device, and the paging indication information is carried on the at least one RMSI.
In yet another possible design, the network device sends at least one synchronization signal block SSB to the terminal device, and the paging indication information is carried on the at least one synchronization signal block SSB.
In yet another possible design, when a network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried in the one RMSI; and each synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to terminal equipment.
In yet another possible design, when a network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried in the one RMSI; wherein,
the plurality of synchronization signal blocks comprise a first synchronization signal block associated with the first RMSI, the first synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to a terminal device;
the method comprises the steps that a first synchronous signal block is selected from a plurality of synchronous signal blocks, a second synchronous signal block is selected from the plurality of synchronous signal blocks except the first synchronous signal block, the second synchronous signal block comprises first synchronous signal block indication information, and the first synchronous signal block indication information is used for indicating the relative position of the first synchronous signal block and the second synchronous signal block.
In yet another possible design, when the network device is applied to an unlicensed frequency band, the paging message is carried on a paging frame and the RMSI further includes one or more of the following parameters: a first time offset value, configured to indicate an offset value of the paging frame with respect to a starting time of a radio frame transmitted by a network device; a second time interval for indicating a maximum time interval for continuously listening to the paging message when the terminal device does not listen to the paging message on the BWP indicated by the paging indication information; the length of the paging frame.
In a second aspect, the present application further provides a network device, including: a processor configured to configure frequency domain resources for transmitting paging messages; and the transceiver is used for sending paging indication information to the terminal equipment, wherein the paging indication information is used for indicating the frequency domain resource for transmitting the paging message.
In one possible design, the transceiver is further configured to transmit at least one remaining system information, RMSI, to a terminal device, the paging indication information being carried on the at least one RMSI.
In yet another possible design, the transceiver is further configured to transmit at least one synchronization signal block SSB to the terminal device, and the paging indication information is carried on the at least one synchronization signal block SSB.
In yet another possible design, when a network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried in the one RMSI; and each synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to terminal equipment.
In yet another possible design, when a network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried in the one RMSI; wherein,
the plurality of synchronization signal blocks comprise a first synchronization signal block associated with the first RMSI, the first synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to a terminal device;
the method comprises the steps that a first synchronous signal block is selected from a plurality of synchronous signal blocks, a second synchronous signal block is selected from the plurality of synchronous signal blocks except the first synchronous signal block, the second synchronous signal block comprises first synchronous signal block indication information, and the first synchronous signal block indication information is used for indicating the relative position of the first synchronous signal block and the second synchronous signal block.
In yet another possible design, when the network device is applied to an unlicensed frequency band, the paging message is carried on a paging frame and the RMSI further includes one or more of the following parameters: a first time offset value, configured to indicate an offset value of the paging frame with respect to a starting time of a radio frame transmitted by a network device; a second time interval for indicating a maximum time interval for continuously listening to the paging message when the terminal device does not listen to the paging message on the BWP indicated by the paging indication information; the length of the paging frame.
In a third aspect, the present application further provides a method for transmitting a paging message, including: the terminal equipment receives paging indication information from the network equipment; and the terminal equipment determines the frequency domain resource for transmitting the paging message according to the paging indication information and receives the paging message on the frequency domain resource indicated by the paging information.
In one possible design, the terminal device further receives at least one remaining system information, RMSI, from a network device, the paging indication information being carried on the at least one RMSI.
In yet another possible design, the terminal device further receives at least one synchronization signal block SSB from a network device, and the paging indication information is carried on the at least one synchronization signal block SSB for transmission.
In yet another possible design, when a network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried in the one RMSI; and each synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to terminal equipment.
In yet another possible design, when a network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried in the one RMSI; wherein,
the plurality of synchronization signal blocks comprise a first synchronization signal block associated with the first RMSI, the first synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to a terminal device;
the method comprises the steps that a first synchronous signal block is selected from a plurality of synchronous signal blocks, a second synchronous signal block is selected from the plurality of synchronous signal blocks except the first synchronous signal block, the second synchronous signal block comprises first synchronous signal block indication information, and the first synchronous signal block indication information is used for indicating the relative position of the first synchronous signal block and the second synchronous signal block.
In yet another possible design, when the terminal device is applied to an unlicensed frequency band, the terminal device determines the location of the paging message frame according to the paging indication information, where the paging indication information includes one or more of the following parameters:
a first time offset value, configured to indicate an offset value of the paging frame with respect to a starting time of a radio frame transmitted by a network device;
a second time interval for indicating a maximum time interval for continuously listening to the paging message when the terminal device does not listen to the paging message on the BWP indicated by the paging indication information;
the length of the paging frame.
In yet another possible design, when the network device is configured to send paging messages on multiple BWPs, the terminal device receives the paging message according to the first time offset value starting from the BWP with the smallest first time offset value.
In yet another possible design, if the terminal device does not receive the paging message within the second time interval, the terminal device jumps to the next BWP, which has the smallest first time offset value within the remaining BWPs.
In a fourth aspect, the present application provides a terminal device, including:
a transceiver for receiving paging indication information from a network device;
and the processor determines frequency domain resources for transmitting the paging message according to the paging indication information and receives the paging message on the frequency domain resources indicated by the paging information.
In yet another possible design, when the terminal device is applied to an unlicensed frequency band, the processor determines the location of the paging message frame according to the paging indication information, where the paging indication information includes one or more of the following parameters:
a first time offset value, configured to indicate an offset value of the paging frame with respect to a starting time of a radio frame transmitted by a network device;
a second time interval for indicating a maximum time interval for continuously listening to the paging message when the terminal device does not listen to the paging message on the BWP indicated by the paging indication information;
the length of the paging frame.
In yet another possible design, when the network device is configured to send paging messages on multiple BWPs, the processor receives paging messages starting from the BWP with the smallest first time offset value according to the first time offset value.
In yet another possible design, if the terminal device does not receive the paging message within the second time interval, the terminal device jumps to the next BWP, which has the smallest first time offset value within the remaining BWPs.
In a fifth aspect, the present application provides a computer-readable storage medium having stored therein instructions, which, when executed on a computer, cause the computer to perform the method of the above aspects.
In a sixth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.
Drawings
Fig. 1 is a schematic view of an application scenario according to an embodiment of the present application;
fig. 2 is a flowchart illustrating a transmission method of a paging message according to the present application;
FIG. 3 is a diagram illustrating paging message transmissions for a plurality of partial bandwidths BWP in one embodiment;
FIG. 4 is a diagram illustrating paging message transmission for a plurality of partial bandwidths BWP in yet another embodiment;
FIG. 5 is a diagram illustrating paging message transmission for a plurality of partial bandwidths BWP in yet another embodiment;
fig. 6 is a diagram illustrating transmission of a paging message including a plurality of partial bandwidths BWPs in an unlicensed band scenario according to an embodiment of the present invention;
fig. 7 is a simplified structural diagram of a network device in an embodiment of the present application;
fig. 8 is a simplified structural diagram of a terminal device in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
Fig. 1 is a simplified schematic diagram of a network architecture to which an embodiment of the present application is applied, where the network architecture may be a network architecture of a wireless communication system, and may include a network device and a terminal device, and the network device and the terminal device are connected through a wireless communication technology. It should be noted that the number and form of the terminal devices and the network devices shown in fig. 1 do not limit the embodiments of the present application. In various embodiments, one network device may be connected to one or more terminal devices. The network device may also be connected to a core network device, which is not shown in fig. 1.
It should be noted that, the wireless communication systems mentioned in the embodiments of the present application include, but are not limited to: narrowband band-internet of things (NB-IoT), global system for mobile communications (GSM), enhanced data rates for GSM evolution (EDGE), Wideband Code Division Multiple Access (WCDMA), code division multiple access (code division multiple access, CDMA2000), time division-synchronous code division multiple access (TD-SCDMA), Long Term Evolution (LTE), fifth generation mobile communication systems, and future mobile communication systems.
In this embodiment, the network device is a device deployed in a radio access network and providing a wireless communication function for a terminal device. The network device may include, but is not limited to, a Base Station (BS), a network controller, a Transmission and Reception Point (TRP), a mobile switching center, or a wireless access point in wifi, and the like, and illustratively, the device that directly communicates with the terminal device through a wireless channel is typically the Base Station. The base station may include various forms of macro base stations, micro base stations, relay stations, access points, or Radio Remote Units (RRUs), etc. Of course, the terminal device may perform wireless communication with other network devices having a wireless communication function, and this application is not limited to this. Note that, in different systems, names of devices having a base station function may be different, for example, in an LTE network, the device is called an evolved node B (eNB or eNodeB), in the third Generation (3G) network, the device is called a node B (node B), and in a 5G network, the device is called a 5G base station (NRNodeB, gNB).
A terminal device, also referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity communication to a user, such as a handheld device with wireless connectivity, a vehicle-mounted device, a wearable device, a computing device, or other processing device linked to a wireless modem. Currently, some examples of terminal devices are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (smart security), a wireless terminal in city (smart city), a wireless terminal in home (smart home), and the like.
In the present application, the terms "network" and "system" may be used interchangeably, but those skilled in the art will understand the meaning. In addition, for part of english abbreviation, the embodiment of the present application is described by taking an LTE system as an example, which may change with the evolution of the network, and specific evolution may refer to descriptions in corresponding standards.
Next, please refer to fig. 2, which is a flowchart illustrating a transmission method of a paging message according to an embodiment of the present application. The method is realized through interaction between network equipment and terminal equipment, wherein the network equipment can be a base station under a cellular network or a wireless access point in WIFI.
201: the network equipment configures frequency domain resources for transmitting paging messages;
202: and the network equipment sends paging indication information to the terminal equipment, wherein the paging indication information is used for indicating the frequency domain resource for transmitting the paging message.
203: and the terminal equipment receives the paging indication information and obtains a paging message according to the paging indication information.
Hereinafter, 201 will be described in more detail.
The frequency domain resource for transmitting the paging message may be a fractional Bandwidth (BWP). In general, a BWP corresponds to a terminal device, and the terminal device is assigned a default bandwidth or sub-band of the BWP at the time of initial access. In various embodiments, the BWP may be composed of a set of consecutive Physical Resource Blocks (PRBs), or the BWP may be a sub-band in a single bandwidth carrier (single wireless band carrier), or the BWP may also be a CC bandwidth in Carrier Aggregation (CA).
Next, 202 is described in more detail.
In one embodiment, the paging indication information may be a paging reference identifier. It is to be understood that the above nomenclature, whether paging indication information or paging reference identifier, which is used to indicate the presence of a paging message or to indicate the location of a paging message, is merely exemplary and not intended to be limiting. Hereinafter, the paging reference flag will be explained as an example.
In various embodiments, the network device may send the paging reference identifier carried in different signaling, which will be exemplarily described below:
(1) the network device transmits the paging reference identifier carried in a Synchronization Signaling Block (SSB). Specifically, the paging reference identifier is carried in a Physical Broadcast Channel (PBCH) of the SSB. In a possible implementation manner, the paging reference identifier carried in the PBCH is used to indicate whether there is an associated paging message, and when searching for an SSB, the terminal device may determine whether there is an associated paging message in the searched SSB according to the paging reference identifier therein. In another possible implementation, the paging indication information carried in the PBCH is used to indicate the location of the associated paging message, and when the terminal searches for the SSB, the terminal may receive the paging message to the corresponding location according to the paging indication information therein. (ii) a Or,
(2) the paging reference identifier may also be a camp on available identification bit in the PBCH, that is, the network device multiplexes the camp on available identification bit in the PBCH to indicate the paging message associated with the SSB. Therefore, when the terminal equipment receives the SSB, whether the paging message associated with the SSB exists is indicated according to the camp on available identification bit of the PBCH; or,
(3) the paging reference identifier may also be carried in remaining system information (RMSI) for transmission. Therefore, the terminal equipment can judge whether the searched RMSI has the associated paging message according to the paging reference identifier in the searched RMSI; or,
(4) if the RMSI and the paging message are corresponding, that is, if an SSB has an associated RMSI, it indicates that the SSB also has an associated paging message, and if an SSB has no associated RMSI, it indicates that the SSB has no associated paging message. At this time, the paging reference identifier may be an RMSI presence identifier (RMSI presence flag) in the PBCH, that is, the network device multiplexes the RMSI presence identifier in the PBCH to indicate whether there is a paging message associated with the SSB. Wherein the RMSI existence flag is used for indicating whether the SSB has an associated RMSI. Therefore, the terminal device can judge whether the searched SSB has the associated paging message according to the RMSI presence identifier of the PBCH in the searched SSB.
Illustratively, the paging reference identifier may employ "0" and "1" to identify whether there is an associated paging message. The network device may adopt "0" to indicate that there is an associated paging message and adopt "1" to indicate that there is no associated paging message; alternatively, the network device may employ a "1" to indicate that there is an associated paging message and a "0" to indicate that there is no associated paging message.
In one embodiment, the network device may send the paging message on the default BWP, i.e. when the terminal device determines that the paging message exists according to the paging reference identifier, the terminal device may search for or receive the paging message on the default BWP. The default BWP may be a BWP carrying SSBs, or the default BWP may be a BWP carrying RMSI.
In another embodiment, the network device may indicate the BWP carrying the paging message, i.e. when the terminal device determines that the paging message exists according to the paging reference identifier, the terminal device may search for or receive the paging message on the indicated BWP. Illustratively, the BWP carrying the paging message may be a BWP carrying a downlink shared channel (PDSCH) carrying the paging message, or may be a BWP carrying a CORESET carrying a Physical Downlink Control Channel (PDCCH) scheduling the paging message, or may be a BWP carrying a PDSCH carrying the paging message and a CORSET scheduling the PDCCH of the paging message at the same time. The network device may indicate the BWP through the paging reference identity, or the network device may transmit information indicating a location to the terminal device so that the terminal device may search for a paging message on the indicated BWP. The specific indication method will be described below.
In one embodiment, a network device may send multiple SSBs and multiple RMSIs within the system bandwidth and may be configured to send paging messages on one BWP. Referring to fig. 3, the network device configures 3 SSBs (SSB1, SSB2, and SSB3), and a bandwidth occupied by each SSB is a minimum system bandwidth supported by the terminal device. Each SSB has an associated RMSI (associated RMSI), the network device sends SSB1 and its associated RMSI1 on BWP1, SSB2 and its associated RMSI2 on BWP2, SSB3 and its associated RMSI3 on BWP3, and is configured to transmit paging messages only on BWP 2. When the terminal searches SSB1, BWP1 carrying RMSI1 associated with SSB1 is obtained according to the RMSI indication information indicated in SSB1, RMSI1 is found, BWP2 carrying paging message is found according to the paging indication information indicated in RMSI1, and thus the paging message can be read on BWP 2. Similarly, the terminal device may find BWP2 carrying paging message according to SSB2, SSB3 RMSI accordingly.
The network device also sends paging to the terminal device at the same time, and the terminal device can acquire BWP for transmitting the paging message according to the frequency offset information. Specifically, the SSB and the RMSI respectively include frequency offset information, where the frequency offset information in the SSB is used to indicate an offset of the BWP carrying the RMSI with respect to the BWP where the SSB is located, and the frequency offset information in the RMSI is used to indicate an offset of the BWP carrying the paging information with respect to the BWP carrying the RMSI. Therefore, when the SSB is searched, the terminal device may find the BWP carrying the RMSI corresponding to the SSB according to the frequency offset information indicated in the searched SSB, and then find the BWP carrying the Paging message (Paging) according to the frequency offset information, indicated in the RMSI, of the BWP used for sending the Paging message relative to the BWP of the RMSI, so that the Paging message may be read on the BWP. This frequency offset information will be exemplarily described below.
It is to be understood that, in different embodiments, the BWP for the user to send the paging message may be the same as or different from the BWP carrying the RMSI.
In another embodiment, only one RMSI is configured within the system bandwidth of a network device and paging messages are sent on one BWP. When the network equipment configures a plurality of synchronous signal blocks and configures one RMSI, the paging indication information is carried and sent in the RMSI; and each synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to terminal equipment. Referring to fig. 4, the network device configures 3 SSBs (SSB1, SSB2, and SSB3), and a bandwidth occupied by each SSB is a minimum system bandwidth supported by the terminal device. Wherein the one RMSI is associated with SSB 2. The network device may be configured to transmit the RMSI on any BWP, and in this embodiment, the network device transmits the RMSI on BWP2, it is to be understood that in other embodiments, the network device may also be configured to transmit the RMSI on BWP1 or BWP3, and in other embodiments, the network device may also transmit the RMSI on other BWPs, which is not limited in this application. Although the center frequency point of the BWP for transmitting the paging information may be the same as the center frequency point of the BWP carrying the RMSI in fig. 4, it is understood that the center frequency point of the BWP for transmitting the paging information may be different from the center frequency point of the BWP carrying the RMSI.
The PBCH of each SSB carries RMSI indication information indicating the RMSI location of the one to indicate the one RMSI. When the terminal searches the SSB, the terminal obtains the BWP carrying the related RMSI according to the RMSI indication information indicated in the SSB, and then obtains the BWP carrying the paging message according to the paging message indication information indicated in the RMSI. Optionally, when the PBCH in the SSB carries the paging information indication information, the terminal may obtain BWP carrying the paging message according to the paging information indication information.
By indicating the frequency information of the RMSI in the SSB, after the terminal searches for an SSB, the RMSI can be found according to the RMSI indication information of the RMSI indicated by the SSB without searching for the SSB again and performing SSB synchronization operation, thereby reducing complexity.
In yet another embodiment, when a network device configures multiple synchronization signal blocks and configures one RMSI, only one of the SSBs has an associated RMSI (hereinafter referred to as the first SSB). The paging indication information is carried and sent in the RMSI; the plurality of synchronization signal blocks comprise a first synchronization signal block associated with the first RMSI, the first synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to a terminal device; the method comprises the steps that a first synchronous signal block is selected from a plurality of synchronous signal blocks, a second synchronous signal block is selected from the plurality of synchronous signal blocks except the first synchronous signal block, the second synchronous signal block comprises first synchronous signal block indication information, and the first synchronous signal block indication information is used for indicating the relative position of the first synchronous signal block and the second synchronous signal block. When the network device configures a plurality of SSBs, other second SSBs except the first SSB need to carry first synchronization signal block indication information, where the first synchronization signal block indication information is used to indicate a frequency offset from the first SSB, so that the other SSBs can acquire the location of the first SSB. Taking SSB1, SSB2, and SSB3 in fig. 4 as an example, assuming that SSB2 is the first SSB, that is, SSB2 has an associated RMSI, SSB1 and SSB3 carry SSB indication information of SSB2, respectively. Therefore, when the terminal device searches the SSB1, the SSB2 may be obtained according to the SSB indication information carried therein, and further, the location of the paging message may be obtained according to the RMSI associated with the SSB2, so as to search for or receive the paging message at the corresponding location. The terminal device also operates similarly when it receives SSB 3.
By indicating the position offset of the SSB with the RMSI indication information in the SSB without the RMSI indication information, after the UE searches for an SSB, the UE can find the BWP of the SSB with the RMSI indication information according to the position offset information in the SSB, and further find the position of the BWP for sending the paging message, thereby saving the frequency of blind detection of the SSB by the terminal equipment and reducing the complexity of the terminal equipment.
It should be understood that the present embodiment does not limit the same scenario as the BWP carrying the RMSI and the BWP carrying the default SSB, that is, when the BWP carrying the RMSI is different from the BWP carrying each SSB, a certain SSB may still be configured by the network device as the default SSB, so as to implement the method of the present embodiment.
In yet another embodiment, the network device configures the paging message to be sent on multiple BWPs, and the paging message sent on the multiple configured BWPs is not repeated. The terminal obtains the scheduled BWP for sending the paging information according to the paging configuration information in the RMSI, wherein the paging configuration information comprises: the number Nn of BWPs activated in the carrier for transmitting the paging message, a BWP number (PCHI) for transmitting the paging message, and/or paging indication information.
Specifically, the PCHI for transmitting the paging message conforms to the following formula:
whereinN ═ min (T, nB), nB, and T are Discontinuous Reception (DRX) parameters, specifically, T is a DRX cycle (cycle), a UE in a standby (idle) state wakes up every T to listen to a Paging message, nB indicates how many Paging Occasions (PO) exist in each DRX cycle, and one PO indicates one transmission of a Paging message. The UE _ ID may be a value obtained by subtracting a fixed value from a value of any one of the following identifiers: international Mobile Subscriber Identity (IMSI), International Mobile Equipment Identity (IMEI), Temporary Mobile Subscriber Identity (TMSI), Radio Network Temporary Identity (RNTI), International Mobile Subscriber Identity (IMSI), international mobile equipment identity (international mobile subscriber identity), International Mobile Equipment Identity (IMEI), temporary mobile subscriber identity (temporary mobile subscriber identity), international mobile equipment identity (IMSI), and temporary mobile subscriber identity (temporary mobile subscriber base)criber identity, TMSI), Radio Network Temporary Identity (RNTI). The system sends a paging message on its corresponding BWP according to the grouped terminals.
Illustratively, the terminal device obtains the frequency location of the BWP for carrying the paging message by calculating the number of the scheduled BWP for transmitting the paging message according to the paging message configuration information and the UE _ ID in the RMSI. Taking terminal device 1 with UE _ ID of 722 and terminal device 2 with UE _ ID of 739 as examples, T is 32, nB is T/2 is 16, N is min (T, nB) is 16, Ns is max (1, nB/T) is 1, PCHI of terminal device 1 is obtained as FLOOR (722/16) MOD 3 is 0, terminal device 2 searches or receives a paging message on BWP corresponding to PCHI, PCHI of terminal device 2 is obtained as FLOOR (739/16) MOD 3 is 1, and terminal device 2 searches or receives a paging message on BWP corresponding to PCHI.
The network device configures a plurality of BWPs in a broadband carrier for sending paging messages, the network device groups users, different user groups correspond to different BWPs, and the paging messages are not repeated on the BWPs, thereby saving paging resources.
The above scheme may be applied to both licensed (licensed) and unlicensed (unlicensed) frequency bands, and the application is not limited thereto. However, in the application scenario of the unlicensed frequency band, there are contention mechanisms of a plurality of different communication systems, and the unlicensed frequency band will be further described below.
In an unlicensed frequency band, in order to ensure fairness, a network device or a terminal device needs to perform Listen Before Talk (LBT) operation before sending data.
In an application scenario of the unlicensed frequency band, a paging message is carried on a Paging Frame (PF) for example, and the paging frame may also be referred to as a paging message frame. The RMSI may also carry one or more of the following paging frame parameters: a first time offset value, a second time interval, and a length of a paging frame (POW). The first time offset value is an offset value of a paging frame relative to a starting time of a Radio Frame (RF), and may be in units of symbols, or in units of slots (slots) or micro slots (mini slots). The value of the first time offset value may be zero, which means that the corresponding paging frame is aligned with the start time of the radio frame. Illustratively, when the network device is configured to send paging messages on multiple BWPs, each BWP has a different first time offset value P0, P1, P2. The second time interval is the longest time interval for continuously listening for paging messages if no paging message is listened for on the corresponding BWP. The second time interval may be in a unit of a symbol, or may be in a unit of a slot (slot) or a mini slot (slot).
When the network device configures the RMSI for each SSB, each RMSI carries the paging frame parameters transmitted on the BWP where the corresponding SSB is located. When the network device configures only one RMSI for multiple SSBs, the RMSI carries paging frame parameters transmitted on BWPs where the corresponding SSBs are respectively located, that is, carries multiple paging frame parameters.
Referring to fig. 6, a description will be given of an example in which one RMSI corresponds to a plurality of SSBs. The network device is configured with three SSBs, namely SSB1, SSB2 and SSB3, and the bandwidth occupied by each SSB is the minimum bandwidth supported by the terminal device. The three SSBs are transmitted on BWPs (BWP1, BWP2, and BWP3), respectively, which also transmit paging messages. At this time, the one RMSI carries paging frame parameters transmitted over BWP1, BWP2, and BWP3, respectively. POW1 indicates the paging frame length of the paging fragm 1, and the paging fragm 2, 3 are similar.
As shown, the first time offset value of the paging frame 1 is P0, i.e. the offset value with respect to the start time of the radio frame is P0; the first time offset value of the paging frame 2 is P1, i.e. the offset value with respect to the starting time of the radio frame is P1; the first time offset value of the paging frame 3 is P2, i.e. the offset value with respect to the starting time of the radio frame is P2. Wherein, P0< P1< P2.
Based on the received RMSI, the terminal device listens for paging messages on BWP1, and if no paging message is listened for a second time interval (e.g., difference between P1 and P2), jumps to BWP2 to listen for paging messages; if the paging message is sensed in the second time interval, but the sensed paging message does not have the paging message of the terminal device, that is, the paging message list does not contain the UE _ ID of the terminal device, continuing to sense until the POW1 is finished; and receiving the paging message if the paging message is sensed at the second time interval and the paging message is searched.
By configuring paging message frames which are transmitted on a plurality of BWPs and have different offset durations relative to a radio frame, it is avoided that due to uncertainty of LBT results, a terminal device which is camped on a successful BWP may not receive a paging message if the paging message cannot be transmitted on the BWP. Therefore, the probability that the terminal equipment listens the paging message in the unlikensed frequency band can be improved, and the communication efficiency is improved.
For example, in the above embodiments, the paging indication information, the RMSI indication information, and the SSB indication information may include or be indicated in a frequency offset manner, and the following description is made for a pit case of frequency offset. The frequency offset information is used to indicate frequency location information of the BWP.
When the network device and the terminal both have the default bandwidth, the frequency offset information may be: (1) the offset of the scheduled frequency point of the BWP where the paging information is located relative to the initial frequency point of the BWP carrying SSB or the initial frequency point of the BWP carrying RMSI; or (2) the offset of the scheduled frequency point of the BWP carrying the paging information relative to the ending frequency point of the BWP carrying the SSB or the ending frequency point of the BWP where the RMSI is located; or (3) the offset of the scheduled frequency point of the BWP carrying the paging information relative to the central frequency point of the BWP carrying the SSB or the central frequency point of the BWP carrying the RMSI. The predetermined frequency point of the BWP carrying the paging information may be a start frequency point, an end frequency point or a center frequency point.
When the network device and the terminal do not have the default bandwidth, the frequency offset information may be: (1) the offset of the start frequency point and the end frequency point of the BWP bearing the paging information relative to the start frequency point of the BWP bearing SSB or the start frequency point of the BWP bearing RMSI; or (2) the offset of the start frequency point and the end frequency point of the BWP carrying the paging information relative to the end frequency point of the BWP carrying the SSB or the end frequency point of the BWP carrying the RMSI; or (3) the offset of the starting frequency point and the ending frequency point of the BWP carrying the paging information relative to the center frequency point of the BWP carrying the SSB or the center point of the BWP carrying the RMSI.
If the frequency offset information does not have the default bandwidth size convention, the frequency offset information may also be the offset and the bandwidth size of the indicated start frequency point or end frequency point of the BWP or center frequency point relative to the BWP carrying the SSB or the start frequency point of the BWP carrying the RMSI;
optionally, the frequency offset information may be an offset and a bandwidth size of a starting frequency point or an ending frequency point or a central frequency point of the indicated BWP relative to the BWP carrying the SSB or the ending frequency point of the BWP carrying the RMSI;
further optionally, the frequency offset information may be an offset and a bandwidth size of a start frequency point or an end frequency point or a center frequency point of the indicated BWP relative to a BWP carrying SSB or a BWP carrying RMSI;
the units of the frequency point and the bandwidth can be Hz, KHz, MHz or the like. The above-described indication granularity of the offset may be performed by carrier spacing, RB, or RB group (e.g., 10 RBs).
The above describes in detail an embodiment of the transmission method for configuring a paging message of the present application, and the following continues to describe embodiments of the network device and the terminal device of the present application.
The embodiments of the network device are explained, and in a specific example, the structure of the network device includes a processor (or: a controller) and a transceiver. In one possible example, the network device may further include a communication unit in the structure. The communication unit is used for supporting communication with other network side devices, such as communication with a core network node. In one possible example, the network device may further include a memory in the structure, the memory coupled to the processor for storing necessary program instructions and data for the network device.
Referring to fig. 7, a schematic diagram of a possible simplified structure of the network device according to the foregoing embodiment is shown. In the example corresponding to fig. 7, the network device according to the present application includes a transceiver 601, a processor 602, a memory 603, and a communication unit 604, and the transceiver 601, the processor 602, the memory 603, and the communication unit 604 are connected by a bus.
On the downlink, data or signaling to be transmitted (including the downlink control information) is conditioned by the transceiver 601 to output samples and generate a downlink signal, which is transmitted via the antenna to the terminal device described in the above embodiments. On the uplink, the antenna receives the uplink signal (including the random access preamble described above) transmitted by the terminal device in the above-described embodiment, and the transceiver 602 conditions the signal received from the antenna and provides input samples. Traffic data and signaling messages are processed, e.g., modulated for data to be transmitted, SC-FDMA symbol generation, etc., in processor 602. These elements are handled according to the radio access technology employed by the radio access network (e.g., the access technology of LTE, 5G, and other evolved systems). In the embodiment shown in fig. 7, the transceiver 602 is integrated by a transmitter and a receiver. In other embodiments, the transmitter and receiver may be independent of each other.
The processor 602 is also configured to control and manage actions of the network device, and to perform the processing performed by the network device in the above embodiments, for example, to control the network device to perform SSB, RMSI, and/or perform other processes of the techniques described herein. By way of example, processor 602 is configured to enable a network device to perform the processes of fig. 2-6 involving the network device. When the method is applied to an unauthorized scenario, the processor 602 performs channel sensing and contends for the channel occupation time. Illustratively, the processor 602 performs channel sensing based on signals received by the transceiver 602 from the antenna and controls the transceiver to transmit signals from the antenna to occupy the channel. In various embodiments, processor 602 may include one or more processors, such as one or more Central Processing Units (CPUs), and processor 602 may be integrated on a chip or may be the chip itself.
The memory 603 is used for storing relevant instructions and data, as well as program codes and data for the network device. In various embodiments, the Memory 603 includes, but is not limited to, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read Only Memory (EPROM), or a portable Read Only Memory (CD-ROM).
It will be appreciated that fig. 7 only shows a simplified design of the network device. In practical applications, the network device may include any number of transmitters, receivers, processors, memories, etc., and all network devices that may implement the present application are within the scope of the present application.
Next, an embodiment of the terminal device is described, and in a specific example, the structure of the terminal device includes a processor (or called a controller), a transceiver, and a modem processor. In one possible example, the network device may further include a memory in the structure, the memory coupled to the processor for storing necessary program instructions and data for the network device.
Fig. 8 shows a simplified schematic diagram of a possible design of the terminal device involved in the above-described embodiment. The terminal device includes a transceiver 701, a processor 702, a memory 703 and a modem processor 704, and the transceiver 701, the processor 702, the memory 703 and the modem processor 704 are connected by a bus.
Transceiver 701 conditions (e.g., converts to analog, filters, amplifies, and frequency upconverts, etc.) the output samples and generates an uplink signal, which is transmitted via an antenna to the network devices described in the embodiments above. On the downlink, the antenna receives the downlink signal transmitted by the base station in the above embodiment. The transceiver 70 conditions (e.g., filters, amplifies, downconverts, and digitizes, etc.) the received signal from the antenna and provides input samples. Illustratively, in modem processor 704, an encoder 7041 receives traffic data and signaling messages to be sent on the uplink and processes (e.g., formats, encodes, and interleaves) the traffic data and signaling messages. A modulator 7042 further processes (e.g., symbol maps and modulates) the coded traffic data and signaling messages and provides output samples. A demodulator 7043 processes (e.g., demodulates) the input samples and provides symbol estimates. A decoder 7044 processes (e.g., deinterleaves and decodes) the symbol estimates and provides decoded data and signaling messages that are sent to the terminal devices. The encoder 7041, modulator 7042, demodulator 7043, and decoder 7044 may be implemented by a combined modem processor 704. These elements are handled according to the radio access technology employed by the radio access network (e.g., the access technology of LTE, 5G, and other evolved systems). In the embodiment shown in fig. 8, the transceiver 701 is integrated by a transmitter and a receiver. In other embodiments, the transmitter and receiver may be independent of each other.
The processor 702 controls and manages the operation of the terminal device, and is configured to execute the processing performed by the terminal device in the above-described embodiment. Such as other processes for controlling the processing of terminal devices based on received paging indicator information and/or techniques described herein. By way of example, the processor 702 is configured to enable the terminal device to perform the processing procedures of fig. 2-6 related to the terminal device. For example, the transceiver 701 is configured to receive downlink control information sent by the network device through an antenna, and the processor 702 is configured to control the transceiver to send or not send a random access preamble through the antenna according to the downlink control information. In various embodiments, processor 702 may include one or more processors, e.g., including one or more CPUs, and processor 702 may be integrated in a chip or may be the chip itself.
The memory 703 is used for storing relevant instructions and data, as well as program codes and data of the terminal device. In various embodiments, the Memory 703 includes, but is not limited to, Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), or portable Read Only Memory (CD-ROM).
It will be appreciated that fig. 8 only shows a simplified design of the terminal device. In practical applications, the terminal device may include any number of transmitters, receivers, processors, memories, etc., and all terminal devices that can implement the present application are within the scope of the present application.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
Claims (24)
1. A method for transmitting a paging message, comprising:
the network equipment configures frequency domain resources for transmitting paging messages;
and the network equipment sends paging indication information to the terminal equipment, wherein the paging indication information is used for indicating the frequency domain resource for transmitting the paging message.
2. The method of claim 1, wherein a network device sends at least one remaining system information (RMSI) to a terminal device, and wherein the paging indication information is sent on the at least one RMSI.
3. The method according to claim 1 or 2, wherein the network device sends at least one synchronization signal block SSB to the terminal device, and the paging indication information is carried on the at least one synchronization signal block SSB.
4. The method of claim 1, wherein the paging indication information is carried in one RMSI when a network device configures a plurality of synchronization signal blocks and configures the one RMSI; and each synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to terminal equipment.
5. The method of claim 1, wherein the paging indication information is carried in one RMSI when a network device configures a plurality of synchronization signal blocks and configures the one RMSI; wherein,
the plurality of synchronization signal blocks comprise a first synchronization signal block associated with the first RMSI, the first synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to a terminal device;
the method comprises the steps that a first synchronous signal block is selected from a plurality of synchronous signal blocks, a second synchronous signal block is selected from the plurality of synchronous signal blocks except the first synchronous signal block, the second synchronous signal block comprises first synchronous signal block indication information, and the first synchronous signal block indication information is used for indicating the relative position of the first synchronous signal block and the second synchronous signal block.
6. The method of claim 1, wherein the paging message is carried on a paging frame when the network device is applied to an unlicensed frequency band, and wherein one or more of the following parameters are further included in the RMSI:
a first time offset value, configured to indicate an offset value of the paging frame with respect to a starting time of a radio frame transmitted by a network device;
a second time interval for indicating a maximum time interval for continuously listening to the paging message when the terminal device does not listen to the paging message on the BWP indicated by the paging indication information;
the length of the paging frame.
7. A network device, comprising:
a processor configured to configure frequency domain resources for transmitting paging messages;
and the transceiver is used for sending paging indication information to the terminal equipment, wherein the paging indication information is used for indicating the frequency domain resource for transmitting the paging message.
8. The network device of claim 7, wherein the transceiver is further configured to send at least one remaining system information (RMSI) to a terminal device, and wherein the paging indication information is sent over the at least one RMSI.
9. The network device of claim 7 or 8, wherein the transceiver is further configured to send at least one synchronization signal block SSB to a terminal device, and wherein the paging indication information is carried on the at least one synchronization signal block SSB.
10. The network device of claim 7, wherein when the network device configures a plurality of synchronization signal blocks and configures one RMSI, the paging indication information is carried in the one RMSI; and each synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to terminal equipment.
11. The network device of claim 7, wherein when the network device configures a plurality of synchronization signal blocks and configures one RMSI, the paging indication information is carried in the one RMSI; wherein,
the plurality of synchronization signal blocks comprise a first synchronization signal block associated with the first RMSI, the first synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to a terminal device;
the method comprises the steps that a first synchronous signal block is selected from a plurality of synchronous signal blocks, a second synchronous signal block is selected from the plurality of synchronous signal blocks except the first synchronous signal block, the second synchronous signal block comprises first synchronous signal block indication information, and the first synchronous signal block indication information is used for indicating the relative position of the first synchronous signal block and the second synchronous signal block.
12. The method of claim 7, wherein the paging message is carried on a paging frame when the network device is applied to an unlicensed frequency band, and wherein one or more of the following parameters are further included in the RMSI:
a first time offset value, configured to indicate an offset value of the paging frame with respect to a starting time of a radio frame transmitted by a network device;
a second time interval for indicating a maximum time interval for continuously listening to the paging message when the terminal device does not listen to the paging message on the BWP indicated by the paging indication information;
the length of the paging frame.
13. A method for transmitting a paging message, comprising:
the terminal equipment receives paging indication information from the network equipment;
and the terminal equipment determines the frequency domain resource for transmitting the paging message according to the paging indication information and receives the paging message on the frequency domain resource indicated by the paging information.
14. The method of claim 13, wherein the terminal device further receives at least one remaining system information (RMSI) from a network device, and wherein the paging indication information is sent on the at least one RMSI.
15. The method according to claim 13 or 14, wherein the terminal device further receives at least one synchronization signal block SSB from a network device, and the paging indication information is carried on the at least one synchronization signal block SSB.
16. The method of claim 13, wherein the paging indication information is carried in one RMSI when a network device configures a plurality of synchronization signal blocks and configures the one RMSI; and each synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to terminal equipment.
17. The method of claim 13, wherein the paging indication information is carried in one RMSI when a network device configures a plurality of synchronization signal blocks and configures the one RMSI; wherein,
the plurality of synchronization signal blocks comprise a first synchronization signal block associated with the first RMSI, the first synchronization signal block comprises RMSI indication information, and the RMSI indication information is used for indicating the position of the RMSI to a terminal device;
the method comprises the steps that a first synchronous signal block is selected from a plurality of synchronous signal blocks, a second synchronous signal block is selected from the plurality of synchronous signal blocks except the first synchronous signal block, the second synchronous signal block comprises first synchronous signal block indication information, and the first synchronous signal block indication information is used for indicating the relative position of the first synchronous signal block and the second synchronous signal block.
18. The method of claim 13, wherein when the terminal device is applied to an unlicensed frequency band, the terminal device determines the location of the paging message frame according to the paging indication information, and wherein the paging indication information includes one or more of the following parameters:
a first time offset value, configured to indicate an offset value of the paging frame with respect to a starting time of a radio frame transmitted by a network device;
a second time interval for indicating a maximum time interval for continuously listening to the paging message when the terminal device does not listen to the paging message on the BWP indicated by the paging indication information;
the length of the paging frame.
19. The method of claim 18, wherein when the network device is configured to send paging messages over multiple BWPs, the terminal device receives paging messages starting from the BWP with the smallest first time offset value according to the first time offset value.
20. Method according to claim 19, wherein if the terminal device does not receive a paging message within the second time interval, the terminal device jumps to the next BWP, said next BWP having the smallest first time offset value within the remaining BWPs.
21. A terminal device, comprising:
a transceiver for receiving paging indication information from a network device;
and the processor determines frequency domain resources for transmitting the paging message according to the paging indication information and receives the paging message on the frequency domain resources indicated by the paging information.
22. The method of claim 21, wherein the processor determines the location of the paging message frame according to the paging indication information when the terminal device is applied to an unlicensed frequency band, and wherein the paging indication information comprises one or more of the following parameters:
a first time offset value, configured to indicate an offset value of the paging frame with respect to a starting time of a radio frame transmitted by a network device;
a second time interval for indicating a maximum time interval for continuously listening to the paging message when the terminal device does not listen to the paging message on the BWP indicated by the paging indication information;
the length of the paging frame.
23. The method of claim 22, wherein the processor receives the paging message from the BWP with the smallest first time offset value according to the first time offset value when the network device is configured to send the paging message over multiple BWPs.
24. The method according to claim 23, characterised in that the terminal device does not receive a paging message within the second time interval, the terminal device jumps to the next BWP, said next BWP having the smallest first time offset value within the remaining BWPs.
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| CN201710940735.6A CN109600832B (en) | 2017-09-30 | 2017-09-30 | Paging message transmission method and device |
| PCT/CN2018/109189 WO2019063020A1 (en) | 2017-09-30 | 2018-09-30 | Communication method and communication device |
| BR112020006388-6A BR112020006388A2 (en) | 2017-09-30 | 2018-09-30 | communication method and communications device |
| KR1020207012544A KR102381712B1 (en) | 2017-09-30 | 2018-09-30 | Communication method and communication device |
| EP18862205.4A EP3691374B1 (en) | 2017-09-30 | 2018-09-30 | Communication method and communication device |
| JP2020518484A JP7241070B2 (en) | 2017-09-30 | 2018-09-30 | Communication method and communication device |
| US16/833,152 US11626947B2 (en) | 2017-09-30 | 2020-03-27 | Communication method and communications device |
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